Fix Flaky Test - Remove force unwrapping in URL response validation

[maxep]

What and why?

Some URL session tests depend on https://www.datadoghq.com which could fail to load (somehow). But our test are expecting data by force unwrapping the response.

How?

Loose the expectation by comparing the URL response with the response that was instrumented, regardless of its data.

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)
• Make sure each commit and the PR mention the Issue number or JIRA reference
• Add CHANGELOG entry for user facing changes
• Add Objective-C interface for public APIs (see our guidelines (internal)) and run make api-surface

[datadog-datadog-prod-us1]

Datadog Report

Branch report: maxep/fix-flakiness
Commit report: 105faa2
Test service: dd-sdk-ios

✅ 0 Failed, 3345 Passed, 190 Skipped, 2m 20.27s Total duration (1m 14.36s time saved)
❄️ 1 New Flaky

New Flaky Tests (1)

• testGivenURLSessionTask_withCustomDelegate_itInterceptsRequests - NetworkInstrumentationFeatureTests - Last Failure

  Expand for error

   
   Assertion Failure at NetworkInstrumentationFeatureTests.swift:398: Asynchronous wait failed: Exceeded timeout of 5 seconds, with unfulfilled expectations: "Notify intercepion did complete".
   Assertion Failure at NetworkInstrumentationFeatureTests.swift:399: XCTAssertEqual failed: ("1") is not equal to ("2") - Interceptor should intercept 2 tasks